Machine for assembling or setting the springs in separable fasteners or spring-studs.



A. RUZICKA.

MACHINE FOR ASSEMBIING 0R SETTING THE SPRINGS IN SEPARABLE FASTENERS 08 SPRING STUDS. APPLICATION FILED JUNE I8, I9I7.

Y 1,262,995 Patented Apr. 9, 1918.

2 SHEETS-SHEET I.

A. RUZICKA. MACHINE FOR ASSEMBLING 0R SETTING THE SPRINGS IN SEPARABLE FASTENERS 0R SPRING STUDS.

APPLICATION FILED JUNE 18, I917- Patented Apr. 9, 1918.

2 SHEETS-SHEET 2.

TIT STS PATT FFTQE.

anronnozrcize, or CLEVELAND, OHIO.

MACHINE FOR ASSEMBLING 0R SETTINGTI-IE SPRINGS IN SEPARABLE FASTENERS OR SPBING-STUDS.

messes.

Specification of Letters Patent.

Patented Apr. 9, 1918.

Application filed June 18, 1917. Serial No. 175,346.

To all whom it may concern:

Be it known that I, ANTON RUZICKA, citizen of theUnited States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Machines for Assembling or Setting the Springs in Separable Fasteners or Spring-Studs, of which the following is a specification.

This invention relates to machines for assembling or setting the springs in separable fasteners or spring studs. These fasteners or press studs comprise two parts, a head part and a socket part, and the socket part has a stud which is slotted at the sides, and is provided with a bent spring which projects through the slots in position to enga e the head when the parts are snapped together;

A machine for making the parts of such fasteners is disclosed in the patent to Prym 921,160, and the device is especially adapted for use in a machine of that kind.

The object of the invention is to provide improved means for placing the springs in the studs.

in the accompanying drawings Figure 1 is a side elevation of a part of a machine containing the invention;

Fig. 2 is a top plan view of Fig. 1;

Fig. 3 is a bottom plan view of the punch;

Fig. 4 is a vertical section of the punch;

Fig. 5 is a section on the line 5--5 of Fig. 4;

Figs. 6, 7, 8 and 9 are sectional views showing the successive operations of the punch in placing a spring in the stud or fastener.

In the accompanying drawings1 indicates a rotary table or conveyer disk for carrying the stud members or parts, and this corresponds to the disk 1 in the Prym patent referred to. 2 is a guide piece for the springs which are forced into the studs, and 3 is part of a feeding mechanism for feeding the springs into position over the stud member and under the punch, the springs being forced by the punch into the stud, the general operation being described in the patent referred to.

The present invention relates to the punch and the associated parts, and 4 indicates a shell which contains a hollow casting 5 the upper end of the bore 6 of which is threaded as indicated at 7 to receive a stud bolt 22 by which the punch is attached to its supporting and operating arm 21. The lower end of the bore in the casting is reduced as indicated at 8 and provided with a substantially semicircular extension or neck 9 which depends below the shell 4:. Slidable up and down in this neck is a spreading member 10, the lower end of which normally projects below the neck and the edge of which opposite the neck 9 is rounded as indicated at 11, and the sides of which are flattened. The upper end of the member 10 has a hollow head 12 which stops against the shoulder 8 in the casting. The member 10 is also bored lengthwise and has therein a reciprocating pin 13 with a head 141 at the top which stops against a shoulder in the hollow head 12. The pin 13 is pressed down by a spring 18 under a screw cap 19, and the punch member 10 is pressed down by a spring 20 confined in the bore 6 above the head 12. The lower end of the pin 13 has a recess 15 to conform to the top of the projection 16 on the stud or fastener member 17. This projection is as stated slotted at the sides as indicated at 30, and the purpose of the invention is to insert the springs 23 in the stud member with its ends engaging in said slots. The remaining parts will be understood from the following description of the operation.

The spring carrier 3 carries the spring 23 which is held in anotch 24 therein and is moved forward over the guide arm to bring the openings in the spring carrier and guide into alinement with the opening in the disk 1 which carries the stud member. The guide member 2 has an inserted ring 25 with sloping walls 26, and the stud member 17 is carried in a ring block 27 mounted in the disk 1. \Vith the parts in registered position, as shown in Fig. 6, the punch is forced down by appropriate mechanism and the member 10 first spreads the arms of the spring 23, as shown in Fig. 7 and as shown in said figure the circular part of the spring 23 is ofgreater size or diameter than the neck 9. As the punch continues down o the position shown in Fig. 8 the sides of the spring are contracted by the sloping walls 26 and engage in a slight groove 28 in the end of the neck 9. As the punch continues on down the spring is forced through the guide block 26 and down into the socket member 17 as shown in Fig. 9, the pin 13 striking the top of the stud 16 and yielding by compression of the spring 18, and the member 10 continues on down until it reaches the-bottom of the socket member 17, thus foroingthe arms of the spring'23' to a position below the head 16, the member 10 finally yielding against the tension of the spring 20 and permitting theneck 9 to finally carry'the spring down into the bottom of the studasshown in Fig. 9, in Which position the arms of the spring slip into the slots and 1 the parts are assembled. Thepn-nch is then lifted and the'dialturns for the next operations The: flattened sides of the plunger lO fit flatly,

scribed,-comprising a pressing member withv a hollow projecting segmental neck, a 'Spl1I1gP16SSBCi spreading member slidable lengthwise in the neck and normally proj ect-f ingbeyond the same, and a yielding center pin slidablelengthwise-in said spreading member. Q

, 2. The combination With-a holder for a stud member,. of atapered guide leading thereto, and a setting punch adapted to force a curved spring through the guide and into said member, said punch having a yielding spreader projecting therefrom andhadapted to be forced 'between'the arms or" said curved spring, for the purpose described 3. The combination With a holder fora cupped fastener member having ya-centralslotted stud oflmeans to insert a curved 40 spring in said member, comprising a tapered guide leading to said holder and adaptedtoc contract the spring, a-setting punchadapted to force :thespring through said. guide and into said member, and a yielding tspreader45 projecting from the punch and adapted .to. spread. the. free ends of the spring to; pass the same over the slotted stud.

4. A setting punch for the purpose described, comprising an outer neck segmental=j in cross section, a yielding hollow spreader Withflattened sides Working in said neck. and projecting beyond thesside face thereof, and .a central yieldingpin Working length- Wise in said spreader.

Intestimony whereof, I do afli'x my signa-:. ture in presence of-two Witnesses;

ANTON RUZICKA.

Witnesses:

JOHN A. B MMHARDT;

J B. DAVIS.'

Copies otthis patent may be obtained forfiye cents each, by addressing. the Commissioner of Patents Y Washington, I). C. Y 

